<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <title>Title</title>
    <style type="text/css">
        *{
            margin: 0;
            padding: 0;
        }
       .header{
           width: 1000px;height: 64px;
           background: #ebcccc;
           margin: 0 auto;
       }
       .container{
           height: 400px;
           width: 1000px;
           margin: 0 auto;
       }
       .container .subside{
           float: left;
           width: 200px;
           height: 400px;
           background:cornsilk;
       }
       .container .main{
           float: left;
           width: 600px;
           height: 400px;
           background: #c1e2b3;
       }
       .container .side{
           float: left;
           width: 200px;
           height: 400px;
           background:cornsilk;
       }
       .footer{
           width: 1000px;
           height: 80px;
           background: powderblue;
           margin: 0 auto;
       }
    </style>
</head>
<body>
<div class="header">
    header
</div>
<div class="container">
    <div class="subside">
        subside
    </div>
    <div class="main">
        main
    </div>
    <div class="side">
        side
    </div>
</div>
<div class="footer">
    footer
</div>
</body>
</html>